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1979 Singer 2.5 ton central air conditioning system including condenser, evaporator, and line set. This is N.O.S. and has never been installed. Condenser, evaporator, and lines are all factory sealed...

Did not measure air flow at all registers but with hotwire its around 900. If the air flow was to high I would expect a much lower tempature drop, and if air flow to low I would expect a much lower ...

I buy 2 or 3 cheap meters at a time, they are always getting used, dropped,wet, etc..., having a spare is a must. I am currently using a $50 craftsman and have no problems with it. Astime goes on you...

Check TXV in outdoor unit or check valve on indoor unit, hard to tell with out putting on gauges.If you have a high pressure going to the indoor unit and a low pressure coming back on the liquid line...

You are correct about the aux. heat coming on and making the air warmer. It sounds like you have a problem with your heat pump and should have it looked at by a professional. If the heat pump is not...